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For Homeowners

What is Energy Recovery Ventilation (ERV)

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Energy Recovery Ventilation (ERV) is a ventilation system used in buildings to exchange indoor air with fresh outdoor air while recovering both heat and moisture from the outgoing air. It enhances energy efficiency by preheating or pre-cooling incoming air and also helps maintain proper indoor humidity levels.

In colder months, an ERV system preheats the incoming fresh air using the heat from the warm indoor air, while in warmer months, it pre-cools and dehumidifies the incoming air. This not only conserves energy by reducing the load on heating and cooling systems but also contributes to indoor comfort and humidity control.

People Also Ask About Energy Recovery Ventilation (ERV)

How does an ERV system differ from an HRV system?

Similar to Heat Recovery Ventilation (HRV), ERV systems utilize a heat exchanger to transfer heat energy between the incoming and outgoing air. However, ERV systems go a step further by also transferring moisture vapor, which helps maintain proper indoor humidity levels.

Where are ERV systems commonly used?

ERV systems are used in residential and commercial buildings seeking to improve ventilation and energy efficiency while maintaining indoor comfort. They are especially valuable in humid climates and environments where maintaining consistent indoor humidity levels is crucial.

Can ERV systems be retrofitted into existing buildings?

Yes, ERV systems can be retrofitted into existing buildings to enhance ventilation and energy efficiency. Professional installation is recommended to ensure the system is appropriately sized and integrated with the existing HVAC setup.

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